Question: What country was Oskemen a part of starting on December 16, 1991?
Paraphrase: What territory was Oskemen involved in establishing on December 16, 1991?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q162548 p:P17 ?s . ?s ps:P17 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1991')) }